Shuttle motion



May 28, 1935.

R. J. BARTHOLOM EW SHUTTLE MOTION Filed June 20, '1931 2 Sheets-Sheet l g 2::- 26 L o 0 i I'NVENTOR. 1%,? flzx zmw BY WMZW Arrozezzsys y 1935- R. J. BARTHOLOMEW' 2,002,973

SHUTTLE MOTION Filed- June 20, 1931 2 Sheets-Sheet 2 7b {I g! Q :1.1; 2

I! a: v L :27 ,5 5 v l I Q INVENTOR.

. BY I wild 40;; e, M ATTORNEY Patented May 28, 1935 v SHlllITLE MOTION 'Robert J. Bartholomew, G'ermantown Pa, as; Signor-to Fletcher Works, Incorporated, Philadelphiagfla a corporation of Pennsylvania tppaaa a 20, 193-1, seeno. 545,146 7 I "1311 claims. 9 -l immipnyiiatg tolirnprovedshuttle aa- --inent of my invention;.. 3'

the objections to the use of flexible drives such as -leather, s,traps, ;wo,ven belting, ,xchains; etc. which are5subjectto-stretch-andwear and breake are ove ome-1 It w b app ate fu then-more, -that;with a;.f lexible drive, as distinui h dfrom a positiveadriv an etc the driving :device prevents the shuttle from being thrown home to the; end of its stroke, necessitating frequent elimination of, the stretch, while breakage of the driving straps orchains causes "seriousdamageyto the shuttles as :wellas to-the fabric, being woven... Theseitroubles are elimi- -nated my construction. a z I Another objection, overcome by the present invention, to theiuse of istraps is, that the straps must; beaddusted to theirtmaximum tension when :the shuttles are at;the;middle' of their stroke, leaving-the strapsslack, at the end of -the stroke =so-that'the shuttles are notunder proper control.

If :the shuttles break or'do not complete their stroke therfabric'rbeing woven is of courseidamaged. 7 I 1 The presentinvention also provides a construction-which :may be. applied either between the loom fr'ames or outside the frame, just ,asrdesired, Ieavingsp'ace whereimostinejededfor other mechanisms such as .cam "motions, head vmotions,

drivesg tc. r I

In the drawing accompanying this applica- 'tion: i "Fig. 1 is a side 'elevational view of-an embodi- L fiFigr- 2' isa view-taken substantially Jon the line 24220f Mgr-1;, 1 r. it Fig. 3 is a side elevational view oframodified embodiment of the inventiomlandn V.

Fig. 4'is an 'elevation'alview of; theapparatus t a p ov ed ofFig.3. ,1

Referring' to theienibodiinent of my invention as illustrated in Figs. 1 and 2. l designates a loom batten, 2 and 3 the layswords attached thereto, these layswords being pivoted on a pivot 4 which in the present instance is in the form of a shaft or rod suitably connected in the loom frame. 'I'he batten I carries shuttle rack 5 for driving the shuttle pinions 6 and shuttles 1. The batten I has a rocking motion about the axis of the shaft 4 while the rack 5 as will be understood has a reciprocating motion on the batten.

As above pointed out, one of the objects of my inventionis to provide a positive drive for the rack 5, as distinguished from the belt, strap and chain {drives of past s tinctures;

i i end, therefore, I provideeccentric gear-8 mounted on drive shaft a d m sh n th e li c ear: to, T s af 9,, as w be een o F fiisr r' vided with a crank ll and link L connected-gt 1 o t a te s as t ro k them-ea,

Shaft r i he i ti'q ear!! rmr ed with a mitre gear llimeshing with a mi I5 on shaft 16. V r

h a tg t. is [provided w h tan tax vidediwithanelongatedcrankpin I 3. f

Mounted on supporting {I'OQS I a-and, 39 .which ar parallel to the shaft 13 and-(the endsof which a? po e in e ax/swords and :3 sc a ciprocable slotted-crosshead-Zl receivingthe rectangular block 22 whichis carried-on thenk pin l8 whereby as, the sh aft tfi -is rotated motion will be imparted to thecrosshead 21 ,toQeffect reciprocation of the samaalong the snpportin g rods i9; and zil The block 22gis-elongatedas the axis of the member 4, without disturbing the driving engagement-of the block with -the crossheadv- [eve-i i r ot l ae b a b -v edme 25 with i the batten pivot or mod -4,-the 1ev er-,, as

will beseen frOmFiEIZ being pivoted tothismeinflber to rock about thatransverse pivot and also raboutathe longitudinalpivot 41 1 t t c r -fmmie a tq p rmiti reekinaor pivoting of the crossheadll with the batten about thetcrajnk I I andw tiaee r flri si t t t me 9f the crank I lwhich rocks th ebat ten 11 b a m -"tom h ti lia r, :40 con truc n whe ein l b t v reek 1 'RQ ilT YQIX-QFW E a iis ieg ishedim i h leather strap drive, woven belting drive andchain drive heretofore used. Y I

It willrbe appreciated that by changing the throw of the crank the mechanism can easily be this embodiment of my invention they can easily 0 time this device to give the best results for the particular class of fabric being woven. It will be appreciated, furthermore, that inasmuch as there is no lost motion the speed and position of the shuttles willbe positive and the shuttles will be under complete control at all parts of the stroke.

The embodiment of my invention illustrated in Figs. 3 and 4 is similar in principle to the arrangement just described in that I provide a posi- The reciprocating block 2| is provided with an extension 3| connected to thedriving lever 23 instead of the arrangement shown in Fig. 2, this extension 3| being rigid with the reciprocating block, as distinguished from'the pivoted link 21. 'As beforaihe driving lever 23 is positivelycon- 'n'ected at?! with the batten rack 5 and is pivoted at its lowerend at-26 to the member 25 which is pivoted on the batten pivot 4 so as to swing about the 'same'pivot as the batten I. 7

It will be appreciated that in this embodiment of my invention the reciprocating block 2 l travels through a small arc-as it is reciprocated but the motion ofthe shuttles I is substantially the same as in the embodiment of my invention illustrated in Figs. 1, and 2. Excess rotation of the crosshead is preventedby the single laysword 3.

What I claim is: r

1. In combination, a batten, a batten rack, a lever connected to the rack, a slotted pivotally mounted block connected to the lever, a crank for driving 'the block, an eccentric gear connected to the crank an eccentric, gear for driving the first mentioned eccentric gear, a crank on the shaft of the second mentioned eccentric gear connected to the batten for driving the same, said blockcrank making one complete'revolu'tion to each two revolutions of the batten crank.

2. In combination a pivoted batten, a batten rack carried thereby, a lever for reciprocating said rack,- a-block 'pivotingwith' the batten and connected to said lever to drive the same, a

' crank rotatable about a fixed axis, a crank pin,

and an elongated block carried by said crank pin and engaging said first mentioned block through.- out the'pivoting of said first mentioned'blcck.

3. In combination, a batten, a pivot for the batten, a batten rack, a lever connected thereto,

a horizontal axis, tworods parallel to the batten and rocking therewith, a vertically slotted crosshead carried by said rods, a crank rotating about a fixed axis and carrying an elongated block, said crank and block reciprocating the crosshead along said rods, a lever secured to the batten rack and pivoting about two mutually perpendicular axes, one of which is the batten axis, and a rigid member connecting the crosshead to the lever.

5. In a narrow fabric loom, a pivoted batten rack, a lever connected thereto, a slotted crosshead connected to said lever, a driven crank rotating about a fixed axis and driving said crosshead, a long crank pin and block carried by the crank, said crosshead having a vertical slot for said crank block said crosshead being mounted to move lengthwise of the block as well as lengthwiseof the loom.

'6. In a narrow fabric loom, a batten rack, a

lever connected thereto, a slotted crosshead conthe batten, the lever, the link and the block rock,

a crank rotating'about a'fixed axis, and driving the block, and driving means for the crank. l r

8. In combination a pivoted batten, a batten rack, a pivoteddriving lever positively .attached to said batten rack, and a block for positively driving said lever, saidblock pivoting about the same axisas the batten. J

9. In' combination. a pivoted batten, a batten rack, a driving lever positively connected to said batten rack, a block for'positively driving said lever, said block being mountedto pivot about thesame axis as the batten, and to maintain a fixed angular relation tothe batten. with respect to saidaxis, and positive means for reciprocating said block.

10; In combination a pivoted batten,a batten rack, a driving lever positively connected .to said the batten, and a crank rotatable about a fixed axis for reciprocating said block. a

11. In combination a pivoted batten, a batten rack,a driving lever. positively attached to said batten rack, a reciprocable block, a link connecting the block and lever, a support forthe. block,

said batten, driving lever, block, support and link .mounted to swing about thebatten axis with the same angular velocity, and. a: crank rotatable about a 'fixediaxis and .cooperatingfwithsaid block to reciprocate the same.

' ROBERT J. BARTHOLOMEW. 

